#[non_exhaustive]pub enum TlsSessionResumptionMode {
Disabled,
Enabled,
Enforced,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against TlsSessionResumptionMode
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let tlssessionresumptionmode = unimplemented!();
match tlssessionresumptionmode {
TlsSessionResumptionMode::Disabled => { /* ... */ },
TlsSessionResumptionMode::Enabled => { /* ... */ },
TlsSessionResumptionMode::Enforced => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when tlssessionresumptionmode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant TlsSessionResumptionMode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
TlsSessionResumptionMode::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant TlsSessionResumptionMode::NewFeature
is defined.
Specifically, when tlssessionresumptionmode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on TlsSessionResumptionMode::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Disabled
Enabled
Enforced
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl TlsSessionResumptionMode
impl TlsSessionResumptionMode
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for TlsSessionResumptionMode
impl AsRef<str> for TlsSessionResumptionMode
source§impl Clone for TlsSessionResumptionMode
impl Clone for TlsSessionResumptionMode
source§fn clone(&self) -> TlsSessionResumptionMode
fn clone(&self) -> TlsSessionResumptionMode
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for TlsSessionResumptionMode
impl Debug for TlsSessionResumptionMode
source§impl Display for TlsSessionResumptionMode
impl Display for TlsSessionResumptionMode
source§impl From<&str> for TlsSessionResumptionMode
impl From<&str> for TlsSessionResumptionMode
source§impl FromStr for TlsSessionResumptionMode
impl FromStr for TlsSessionResumptionMode
source§impl Hash for TlsSessionResumptionMode
impl Hash for TlsSessionResumptionMode
source§impl Ord for TlsSessionResumptionMode
impl Ord for TlsSessionResumptionMode
source§fn cmp(&self, other: &TlsSessionResumptionMode) -> Ordering
fn cmp(&self, other: &TlsSessionResumptionMode) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for TlsSessionResumptionMode
impl PartialEq for TlsSessionResumptionMode
source§fn eq(&self, other: &TlsSessionResumptionMode) -> bool
fn eq(&self, other: &TlsSessionResumptionMode) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for TlsSessionResumptionMode
impl PartialOrd for TlsSessionResumptionMode
source§fn partial_cmp(&self, other: &TlsSessionResumptionMode) -> Option<Ordering>
fn partial_cmp(&self, other: &TlsSessionResumptionMode) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for TlsSessionResumptionMode
impl StructuralPartialEq for TlsSessionResumptionMode
Auto Trait Implementations§
impl Freeze for TlsSessionResumptionMode
impl RefUnwindSafe for TlsSessionResumptionMode
impl Send for TlsSessionResumptionMode
impl Sync for TlsSessionResumptionMode
impl Unpin for TlsSessionResumptionMode
impl UnwindSafe for TlsSessionResumptionMode
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more